Results 41 to 50 of about 346,065 (304)

Dual‐Mode Ion‐Pair Charge‐Transfer Organic Nanoparticles From Fluorescent Viologens for Amine Sensing and Encrypted Data Storage

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To overcome the intrinsic drawbacks of conventional viologens, such as slow optical response and poor radical stability, we synthesized a series of viologen derivatives (BTV, NTV, and STV) by incorporating thiazolo[5,4‐d]thiazole units into bipyridine ...
Jiayao Sha, Yiting Wang, Zhaoguang Zhang, Chenjing Liu, Zhikang Han, Tianle Cao, Ni Yan, Yueyan Zhang, Gang He   +8 more
doaj   +1 more source

Technical efficiency of U.S. Western Great Plains wheat farms using stochastic frontier analysis

Journal of Applied Economics, 2023
Technical efficiency (TE) is an important measure of farm performance. This study measured the TE of wheat farms across six states in the U.S. Western Great Plains based on production and farm management-specific variables. Significant factors positively
Inbae Ji, Jeffrey D. Vitale, Pilja P. Vitale, Brian D. Adam   +3 more
doaj   +1 more source

Advancing Age Modulates Associations Between Cognitive Impairment and Brain Volumes in Early MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Cognitive impairment is common in multiple sclerosis (MS), but manifestations following the first demyelinating event are relatively unexplored. We investigated cross‐sectional associations between magnetic resonance imaging (MRI)–derived brain volumes and the presence of cognitive impairment outcomes five years after the first ...
Piriyankan Ananthavarathan, Marco Pitteri, Michael Foster, Sara Collorone, Sara Salama, Elisa Colato, Ferran Prados, Baris Kanber, Marios Yiannakas, Claudia A. M. Gandini Wheeler‐Kingshott, Indran Davagnanam, Frederik Barkhof, Declan Chard, Olga Ciccarelli, Ahmed Toosy   +14 more
wiley   +1 more source

A Meta-heuristic Algorithm for Portfolio Selection Problem under Cardinality and Bounding Constraints [PDF]

پژوهشهای اقتصادی, 2008
The focus of this paper is on standard Markowitz mean–variance model and its traditional approach to solve portfolio selection problem (Quadratic Planning).
mohammad taghi Taqavi Fard, taha Mansouri, mohsen Khosh Tinat   +2 more
doaj  

Portfolio optimization with simulated annealing algorithm [PDF]

تحقیقات مالی, 2015
The Markowitz issue of optimization can’t be solved by precise mathematical methods such as second order schematization, when real world condition and limitations are considered.
Saeid Qodsi, Reza Tehrani, Mahdi Bashiri
doaj   +1 more source

Screening Routine Clinical Notes for Epilepsy Surgery Candidates Using Large Language Models

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Epilepsy surgery is severely underutilized despite proven efficacy, with substantial under‐referral of eligible patients in routine clinical practice. This study evaluated the potential role of large language models (LLMs) as decision‐support tools for screening unstructured clinical notes to identify epilepsy surgery candidates and ...
Uriel Fennig, Nadav Amir, Maya Schiller, Roni Loebenstein, Johnatan Nissan, Marina Boxer, Shany Guly Gofrit, Gal Goshen, Sándor Beniczky, Nicola Maggio   +9 more
wiley   +1 more source

Quick Introduction into the General Framework of Portfolio Theory

Risks
This survey offers a succinct overview of the General Framework of Portfolio Theory (GFPT), consolidating Markowitz portfolio theory, the growth optimal portfolio theory, and the theory of risk measures.
Philipp Kreins, Stanislaus Maier-Paape, Qiji Jim Zhu   +2 more
doaj   +1 more source

Performance of volatility asset as hedge for investor's portfolio against stress events: COVID-19 and the 2008 financial crisis

IIMB Management Review, 2022
Under stress events, most of the asset prices tend to be positively correlated, breaking the diversification benefits. In this study, we explore the performance of different assets particularly during stress events (the 2008 crisis and the COVID-19 ...
Chinnaraja Chendurpandian, Piyush Pandey
doaj   +1 more source

Cracking the Code: Which Ocular Symptoms Predict Dry Eye Signs? Insights from a large international sicca registry

Arthritis Care &Research, Accepted Article.
Purpose The study aimed to identify symptom‐based predictors of dry eye disease (DED) signs in the Sjögrens International Collaborative Clinical Alliance (SICCA) cohort. Methods Retrospective analysis examining 16 ocular symptoms (most graded 0‐4) and artificial tear (AT) use (graded 0‐3) as predictors of DED signs [abnormal ocular surface staining ...
Pragnya R Donthineni, Chloe Shields, Rohit Muralidhar, Shreya Bhatt, Alan Baer, Robert Fox, Sara S. McCoy, Anat Galor   +7 more
wiley   +1 more source

The Physician‐Scientist Pipeline for Pediatric Rheumatology – Current Landscape and Future Perspectives.

Arthritis Care &Research, Accepted Article.
Over the past 50 years, the science of pediatric rheumatology has grown exponentially due to an expansion in the understanding of complex rheumatic conditions and a surge in novel targeted therapeutics. Physician‐scientists in the field of pediatric rheumatology have played major roles in these advancements that have improved the care of children ...
Ekemini A. Ogbu, Linda T. Hiraki, Mara L. Becker   +2 more
wiley   +1 more source